Aqueon 20 Gallon Tank, Is It Really? Question

Discussion in 'Freshwater Beginners' started by Joyceheatherington, May 26, 2019.

  1. Joyceheatherington Valued Member Member

    So we got a 20 gallon aqueon fish tank kit. So my Dad the other day did a 100% water change. The only thing is he emptied the water into three - 5 gallon buckets.

    Which makes it only 15 gallons. Did aqueon lie to us, and other buyers?

    If not what is 20 gallons referring too?

    Ps. I'm not asking how to measure for a 20 gallon tank.

    Last edited: May 26, 2019
  2. Oarngesi Valued Member Member

    Measure length x width x height x 7.5 is anything in the tank besides water?

  3. david1978 Fishlore Legend Member

  4. Nobote Valued Member Member

    Also most 5 gallon buckets are really 4 gallons.
  5. Joyceheatherington Valued Member Member

    I did the measuring you said before we got that. But still it was 15 gallons of water when we did a water change.

    So curious what the gallons is referring too.

    Yes that was done weeks before we got the kit. Calculator says 20 gallons. But yet came out 15 gallons of water.

    I'm gonna email the company and see what they mean by gallons since it's not matching.
    Last edited by a moderator: May 27, 2019
  6. Momgoose56 Well Known Member Member

    Joyce, you have gravel, decorations etc. in the tank. THEY are taking up space. You also don't fill it up to the very top of the tank. Plus, unless he took ALL the fish out and tipped the tank sideways to drain it, there was still water in the tank. That is why you only got 15 gallons out of a 20 gallon tank.
  7. kallililly1973 Well Known Member Member

    Was it full to the very top or were you doing a WC cause it was WC day and the level was a bit lower? also is the bottom glass raised up a bit from the black rim. The outside dimensions add up to 20 but if the glass was glued a bit higher it could be taking a little away from the tank. just a way out there thought..
  8. Wraithen Fishlore VIP Member

    It means the volume of the tank is 20 gallons. It does not mean the tank holds 20 gallons. Did you fill the tank until it overflowed a little before the water change? Is there absolutely nothing in the tank except water? If this is the case, you should find about 19.7 gallons of water in the tank. Fish, decor, substrate, filters, tubes and hoses, etc. all decrease the amount of water in the tank. Also, the last 2 gallons is a pain to get out of the tank. You would be surprised sometimes how much water is actually left when you tilt the tank to get all the water into a corner to suck out the last of the water.
  9. Tol Valued Member Member

    Substrate, decorations, filter, heater, plants, fish, it all takes away from the water volume. The filter also holds some of the water and if it is a canister filter it can likely hold a decent amount.
  10. SaltyPhone Well Known Member Member

    I wouldn’t over analyze this. A 20 gal high measures 24”x12”x16”. That roughly is 20 gallons. I don’t think any company is going to guarantee exact water volume.
  11. david1978 Fishlore Legend Member

  12. SaltyPhone Well Known Member Member

    Last edited by a moderator: May 27, 2019
  13. david1978 Fishlore Legend Member

    Yea it changed it to Google. One of the no no sites apparently. Well any way a 20 gallon tank holds 17.5 gallons of water as per its inside measurements. Then a farther reduction for everything else. So if they actually got 15 gallons out if they did good. I have 2 55 gallon tanks. Ones half an inch longer and wider then the other. Figured that out switching stands.
  14. Wraithen Fishlore VIP Member

    The joys of "standard" volume tanks
  15. kallililly1973 Well Known Member Member

    At the end of the day weather it holds 15-17.7 or 19.5 gallons the stocking really isn't going to make a major difference.
  16. Mirandalee New Member Member

  17. Kevin56 New Member Member

    AnistAnister filter has nothing to do with tank volume. Most likely the buckets we not filled to top or there would become a mess. You seem to be looking for problems where there is not one.
  18. Skavatar Well Known Member Member

    not sure if it was mentioned, but the measurements of a tank are the external measurements. the glass thickness affects the internal measurements.

    this was mentioned, Water Displacement. Substrates, rocks, decor, heater, filter, fish, plants. they all displace water.